CVE-2011-1945

openssl: ECDSA private key leak through a remote timing attack

Published May 31, 2011 CVSS 2.0 · 2.6 Low EPSS 3.3% KEV · Not listed
Description
The elliptic curve cryptography (ECC) subsystem in OpenSSL 1.0.0d and earlier, when the Elliptic Curve Digital Signature Algorithm (ECDSA) is used for the ECDHE_ECDSA cipher suite, does not properly implement curves over binary fields, which makes it easier for context-dependent attackers to determine private keys via a timing attack and a lattice calculation.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-2309-1 openssl security update
EUVD EUVD EUVD-2011-1942 The elliptic curve cryptography (ECC) subsystem in OpenSSL 1.0.0d and earlier, when the Elliptic Curve Digital Signature Algorithm (ECDSA) is used for the ECDHE_ECDSA cipher suite, does not properly implement curves over binary fields, which makes it easier for context-dependent attackers to determine private keys via a timing attack and a lattice calculation.
Ubuntu USN Ubuntu USN USN-1357-1 OpenSSL vulnerabilities
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Aug 6, 2024, 10:46 PM
Reserved
May 9, 2011, 12:00 AM
Status
Modified
Published
May 31, 2011, 8:55 PM
Modified
Jun 16, 2026, 11:30 PM
Severity
Important
Public date
May 17, 2011, 12:00 AM